Hernial-truss pad.



No. 721,812. PATENTED MARS, 190s. P. A. LORENZ. HERN'IAL muss PAD.

APPLIOATION FILED APR. 27, 1901.

NO MODEL.

' EErc.

PATENT PAUL ARTHUR LORENZ, OF DRESDEN, GERMANY.

HERNlAL-TRUSS PAD.

SPECIFICATION forming part of Letters Patent No. 721,812, dated March 3,1903.

' Application filed April 27,1901- Serial No. 57,804. (No model.)

To (ZZZ whom it may concern.-

Be it known that I, PAUL ARTHUR LORENZ, a subject of the King ofSaxonyg'residing at Dresden, Saxony,German Empire, (and of the firm ofMaximilian Rost, of Gorlitzerstrasse 28,) have invented a certain newand useful Improved Cushion or Pad for Trusses and Similar Instruments,(for which I have made application for Letters Patent in Germany, underL.14,774, VIII/30, and-L.14L,773, VIII 30, both dated October 5, 1900,)of which the following is a specification. r

This invention relates to cushions or pads for trusses and similarinstruments, according to which the part for fixing the trussspring-aplate attached over the center of the cushion-is connected with thecircum ference of the latter by spring-supports. Such, constructionallows a certain amount of spring play between the fixing part and thecushion, not only in a vertical direction or in a determined plane, butalso a universallyyielding mobility between the fixing part or holderand the cushion. The cushion therefore can approach the holder under theyielding action of the springs, and besides that it can oscillate aboutits part of support in any desired plane in such a manner that itreturns after each movement to its proper position. Consequently thecushion (the object of which is to press upon a certain part of the bodywithout unduly incommoding the patient by exerting too heavy a pressure)acts in a completely-satisfactory manner by being able to follow themovements of the corresponding part of the body without leaving itsproper position thereon and without the risk of displacing thetruss-spring. Unlike previous devices with movable cushions, no specialauxiliary bandages are necessary in the present case for securing theproper position.

The device forming the object of the present application isdistinguished from a previous device having radial springs on the backof the cushion-body and a ball-joint by the fact that the improved formof radial springs renders the use of the ball-joint unnecessary, andtheir outer ends do not press upon the flesh at the edge of the orificeof protrusion.

Several modifications of the invention are illustrated in theaccompanying drawings.

'shown in Fig. 2.

Figures 1, 2, and 3 show some forms of construction with a rigidcushion-body.

In Figs.l to 3, a represents a cushion with a solid body (of metal orany other suitable material, which can of course be provided with a softcovering or padding) having the shape of a dish or cap. 6, Fig. 2, isthe end of the truss-spring, and b the plate serving for the connectionof the truss-spring to the cushion. This plate I) is in all threemodifications yieldingly suspended over the center of the cushi'ouand isconnected with the circumference of the latter by radial springs.

According to Figs. 1 and 2 the springs d are flat springs. the plate I)or with the cushion a. In all cases they engage with the edge of thecushion and are bent or curved between the latter and the plate I) inorder to give the necessary flexibility. By pressing vertically upon theplate I) all the springs (the number of which may be as desired) yieldin a uniform manner; but also a universal oscillating movement of thecushion toward the plate I) is possible, as the springs under a suitablestrain will on one side he submitted to pressure and on the other sideto tractive force.

The springs d, Fig. 1, have to take up besides pressure and tractiveforce due to oscillating motion also the vertical pressure exerted bythe springe on the cushion. With regard to said pressure these springscan be supplemented by a special spring or springs inserted between theplate I) and the body of the cushion a. For this purpose a specialspring for instanceis arranged, as

The spring f, Fig. 3, arranged in the same manner, has to take up almostthe whole of the vertical pressure, as instead of the fiat springs (1,Figs. 1 and 2,

spiral springs d are arranged between the plate b and cap a, whichsprings engage eyes or securing means thereon. In case of verticalpressure upon the plate I) the springs 01' are also stretched to a smallextent; but the spring f has to take up the largest amount of thepressure.

The connection of the truss-springie tothe plate I) may be adjustable,to which endlong slotst' t" 11 are formed in the plate I), andclamping-screws is, Fig. 2, are provided to connect the parts. Accordingto this figure They can also be integral with the slots i't' are used asthe attachment-slots, and when the slots 2' and t" are employed thecushion is moved back to the extent of one slot. By giving a curved formto the slots an adjustment of the cushion in the plane of the plate I)is possible.

In the constructions shown in Figs. 1, 2, and 3 the free space in thehollow of the cap a allows the necessary space for the play of thesprings.

The construction hereinbefore described has the advantage, as alreadystated in the preamble of the specification, that under allcircumstances the cushion, owing to its uniniversal mobility orflexibility, can yield and particularly during movements of the body,and at the same time has a tendency to return to its proper positionwith regard to the truss-spring, while the truss-spring, with the plateI), constantly remains in the normal position.

The outward shape of the cushion can vary and may be in accordance withrequirements of oval, round, conical, or other shape.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a truss, the combination with the rigid concavo-convex body, theplate to which the truss-spring is secured, and the springs connected tosaid plate and body, whereby the plate is yieldingly suspended centrallyabove the concavity of the body; substantially as described.

2. In a truss, the combination with the rigid concavo-convex bodyportions, a plate to which the truss-spring is secured and the radialsprings connected to the plate and edge of the body, whereby the platewill be suspended centrally above the hollow space of the body and befree to yield in radial as well as axial directions; substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

PAUL ARTHUR LORENZ.

\Vitnesses:

CH. HUGO DUMMER, KARL GREIERT.

